Water Resources Research Center, University of Minnesota
Newsletter or Bulletin
Several municipal water supplies in the Rock River watershed in Southwestern Minnesota were tested on approximately a monthly basis for a little over two-years for the anions nitrate-nitrogen, sulfate, chloride, and bicarbonate alkalinity as calcium carbonate, and for total dissolved solids, conductivity, and pH. Anions were selected for analysis because it was felt that they were better descriptors of the effect of land use practices on ground water quality. The ratios of the various anions sulfate/nitrate-nitrogen, chloride/nitrate-nitrogen, sulfate/chloride, and bicarbonate alkalinity as calcium carbonate/sulfate served to identify changes in water quality not associated with dilution.
Findings indicated seasonal changes in water quality not necessarily reflected in changes in the ratios, generally increasing concentrations of nitrate-nitrogen in many instances, exceeding permissible concentrations specified in the Interim Primary Drinking Water Standards, and high dissolved solids concentrations generally exceeding recommended levels specified in the Secondary Drinking Water Standards.
Groundwater concentrations were compared with surface water samples from the several streams, springs, and lakes in the area. Some relations to land use practice on groundwater quality and precipitation were indicated.
The data have been utilized to call attention to deficiencies in water quality to the consumers of the waters in the communities concerned.
Straub, C.P. Goppers, V.M. Singer, R.D. 1982. Public Water Supply Quality in the Rock River Watershed, Southwest Minnesota. Water Resources Research Center.
Water Resources Research Center
Straub, C.P.; Goppers, V.M.; Singer, R.D..
Public Water Supply Quality in the Rock River Watershed, Southwest Minnesota.
Water Resources Research Center, University of Minnesota.
Retrieved from the University of Minnesota Digital Conservancy,
Content distributed via the University of Minnesota's Digital Conservancy may be subject to additional license and use restrictions applied by the depositor.
Showing items related by title, author, creator and subject.
Blake, George R.; Espointour, Elizabeth (Water Resources Research Center, University of Minnesota, 1980-10)
During fiscal year 1980 the Water Resources Research Center sponsored ten projects funded through programs of the U.S. Department of Interior, Office of Water Research and Technology and two funded through grants from the ...
Walton, William C. (Water Resources Research Center, University of Minnesota, 1972-04)
In 1970. Minnesota’s State government contained at least 21 departments, agencies, boards, commission, committees, etc. with which water and related land resources responsibilities. Expenditures by these organizations ...
This report presents technical data and information on water quality sampling from the St. Louis River related to sulfate and mercury contamination from mining that may affect human health. However the report contains raw ...